base64ToUint8Array

Convert a Base64-encoded string to a Uint8Array.

Installation

npm install @stdlib/string-base-base64-to-uint8array

Usage

var base64ToUint8Array = require( '@stdlib/string-base-base64-to-uint8array' );

base64ToUint8Array( str )

Converts a base64-encoded string to a Uint8Array.

var string2buffer = require( '@stdlib/buffer-from-string' );

var str = string2buffer( 'Hello World!' ).toString( 'base64' );
// returns 'SGVsbG8gV29ybGQh'

var out = base64ToUint8Array( str );
// returns <Uint8Array>[ 72, 101, ... ]

Notes

• The function returns null when provided a string containing non-ASCII characters.

Examples

var string2buffer = require( '@stdlib/buffer-from-string' );
var base64ToUint8Array = require( '@stdlib/string-base-base64-to-uint8array' );

var buf = string2buffer( 'Hello World!' ).toString( 'base64' );
// returns 'SGVsbG8gV29ybGQh'

var arr = base64ToUint8Array( buf );
// returns <Uint8Array>

buf = string2buffer( 'HELLO WORLD!' ).toString( 'base64' );
// returns 'SEVMTE8gV09STEQh'

arr = base64ToUint8Array( buf );
// returns <Uint8Array>

buf = string2buffer( 'To be, or not to be: that is the question.' ).toString( 'base64' );
// returns 'VG8gYmUsIG9yIG5vdCB0byBiZTogdGhhdCBpcyB0aGUgcXVlc3Rpb24u'

arr = base64ToUint8Array( buf );
// returns <Uint8Array>

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2026. The Stdlib Authors.